text: """
  Snake Game
  Made with PyGame by THE SGJ
  """
  
  import pygame, sys, time, random
  
  
  # Difficulty Value
  # Easy       -  10
  # Medium     -  25
  # Hard       -  40
  # Extreme    -  60
  # Impossible -  120
  
  difficulty = 10
  
  # Window size
  frame_size_x = 800
  frame_size_y = 600
  
  # Checks for errors encountered
  check_errors = pygame.init()
  # pygame.init() example output -> (6, 0)
  # second number in tuple gives number of errors
  if check_errors[1] > 0:
      print(f'[!] Had {check_errors[1]} errors when initialising game, exiting...')
      sys.exit(-1)
  else:
      print('[+] Game successfully initialised')
  
  
  # Initialise game window
  pygame.display.set_caption('Snake Eater')
  game_window = pygame.display.set_mode((frame_size_x, frame_size_y))
  
  
  # Colors (R, G, B)
  black = pygame.Color(0, 0, 0)
  white = pygame.Color(255, 255, 255)
  red = pygame.Color(255, 0, 0)
  green = pygame.Color(0, 255, 0)
  blue = pygame.Color(0, 0, 255)
  
  
  # FPS (frames per second) controller
  fps_controller = pygame.time.Clock()
  
  
  # Game variables
  snake_pos = [100, 50]
  snake_body = [[100, 50], [100-10, 50], [100-(2*10), 50]]
  
  food_pos = [random.randrange(1, (frame_size_x//10)) * 10, random.randrange(1, (frame_size_y//10)) * 10]
  food_spawn = True
  
  direction = 'RIGHT'
  change_to = direction
  
  score = 0
  
  
  # Game Over
  def game_over():
      my_font = pygame.font.SysFont('times new roman', 90)
      game_over_surface = my_font.render('GAME OVER', True, blue)
      game_over_rect = game_over_surface.get_rect()
      game_over_rect.midtop = (frame_size_x/2, frame_size_y/4)
      game_window.fill(black)
      game_window.blit(game_over_surface, game_over_rect)
      show_score(0, blue, 'times', 20)
      pygame.display.flip()
      time.sleep(3)
      pygame.quit()
      sys.exit()
  
  
  # Score
  def show_score(choice, color, font, size):
      score_font = pygame.font.SysFont(font, size)
      score_surface = score_font.render('Score : ' + str(score), True, color)
      score_rect = score_surface.get_rect()
      if choice == 1:
          score_rect.midtop = (frame_size_x/10, 15)
      else:
          score_rect.midtop = (frame_size_x/2, frame_size_y/1.25)
      game_window.blit(score_surface, score_rect)
      # pygame.display.flip()
  
  
  # Main logic
  while True:
      for event in pygame.event.get():
          if event.type == pygame.QUIT:
              pygame.quit()
              sys.exit()
          # Whenever a key is pressed down
          elif event.type == pygame.KEYDOWN:
              # W -> Up; S -> Down; A -> Left; D -> Right
              if event.key == pygame.K_UP or event.key == ord('w'):
                  change_to = 'UP'
              if event.key == pygame.K_DOWN or event.key == ord('s'):
                  change_to = 'DOWN'
              if event.key == pygame.K_LEFT or event.key == ord('a'):
                  change_to = 'LEFT'
              if event.key == pygame.K_RIGHT or event.key == ord('d'):
                  change_to = 'RIGHT'
              # Esc -> Create event to quit the game
              if event.key == pygame.K_ESCAPE:
                  pygame.event.post(pygame.event.Event(pygame.QUIT))
  
      # Making sure the snake cannot move in the opposite direction instantaneously
      if change_to == 'UP' and direction != 'DOWN':
          direction = 'UP'
      if change_to == 'DOWN' and direction != 'UP':
          direction = 'DOWN'
      if change_to == 'LEFT' and direction != 'RIGHT':
          direction = 'LEFT'
      if change_to == 'RIGHT' and direction != 'LEFT':
          direction = 'RIGHT'
  
      # Moving the snake
      if direction == 'UP':
          snake_pos[1] -= 10
      if direction == 'DOWN':
          snake_pos[1] += 10
      if direction == 'LEFT':
          snake_pos[0] -= 10
      if direction == 'RIGHT':
          snake_pos[0] += 10
  
      # Snake body growing mechanism
      snake_body.insert(0, list(snake_pos))
      if snake_pos[0] == food_pos[0] and snake_pos[1] == food_pos[1]:
          score += 1
          food_spawn = False
      else:
          snake_body.pop()
  
      # Spawning food on the screen
      if not food_spawn:
          food_pos = [random.randrange(1, (frame_size_x//10)) * 10, random.randrange(1, (frame_size_y//10)) * 10]
      food_spawn = True
  
      # GFX
      game_window.fill(black)
      for pos in snake_body:
          # Snake body
          # .draw.rect(play_surface, color, xy-coordinate)
          # xy-coordinate -> .Rect(x, y, size_x, size_y)
          pygame.draw.rect(game_window, green, pygame.Rect(pos[0], pos[1], 10, 10))
  
      # Snake food
      pygame.draw.rect(game_window, white, pygame.Rect(food_pos[0], food_pos[1], 10, 10))
  
      # Game Over conditions
      # Getting out of bounds
      if snake_pos[0] < 0 or snake_pos[0] > frame_size_x-10:
          game_over()
      if snake_pos[1] < 0 or snake_pos[1] > frame_size_y-10:
          game_over()
      # Touching the snake body
      for block in snake_body[1:]:
          if snake_pos[0] == block[0] and snake_pos[1] == block[1]:
              game_over()
  
      show_score(1, white, 'consolas', 20)
      # Refresh game screen
      pygame.display.update()
      # Refresh rate
      fps_controller.tick(difficulty)